Attributes / relations provided by ♦1Cynomys ludovicianus, John L. Hoogland, MAMMALIAN SPECIES No. 535, pp. 1-10 (1996) ♦2SPECIES ASSESSMENT FOR SWIFT FOX (VULPES VELOX) IN WYOMING, DARBY N. DARK-SMILEY AND DOUGLAS A. KEINATH, prepared for United States Department of the Interior Bureau of Land Management, December 2003 ♦3Lepus townsendii, Burton K. Lim, MAMMALIAN SPECIES No. 288, pp. 1-6 (1987)